parser, planner: fix embedded setOprStmt will be seen as SetOprSelectList item and lost its orderBy and Limit (#49421)

[ti-chi-bot]

This is an automated cherry-pick of #49421

What problem does this PR solve?

Issue Number: close #49377

Problem Summary:

What changed and how does it work?

Check List

Tests

• Unit test
• Integration test
• Manual test (add detailed scripts or steps below)
• No need to test

  • I checked and no code files have been changed.

Side effects

• Performance regression: Consumes more CPU
• Performance regression: Consumes more Memory
• Breaking backward compatibility

Documentation

• Affects user behaviors
• Contains syntax changes
• Contains variable changes
• Contains experimental features
• Changes MySQL compatibility

Release note

Please refer to Release Notes Language Style Guide to write a quality release note.

parser, planner: fix embedded setOprStmt will be seen as SetOprSelectList item and lost its orderBy and Limit

[ti-chi-bot]

PR needs rebase.

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[codecov]

Codecov Report

❗ No coverage uploaded for pull request base (release-7.5@3b7f150). Click here to learn what that means.
The diff coverage is 100.0000%.

Additional details and impacted files

@@               Coverage Diff                @@
##             release-7.5     #49499   +/-   ##
================================================
  Coverage               ?   73.0949%           
================================================
  Files                  ?       1404           
  Lines                  ?     415171           
  Branches               ?          0           
================================================
  Hits                   ?     303469           
  Misses                 ?      92326           
  Partials               ?      19376           

Flag	Coverage Δ
unit	73.0949% <100.0000%> (?)

Flags with carried forward coverage won't be shown. Click here to find out more.

Components	Coverage Δ
dumpling	53.9913% <0.0000%> (?)
parser	∅ <0.0000%> (?)
br	53.4602% <0.0000%> (?)

[AilinKid]

/build

[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2024-02-19 11:47:53.57151057 +0000 UTC m=+271362.319133680: ☑️ agreed by AilinKid.
• 2024-02-20 03:39:19.64543473 +0000 UTC m=+328448.393057838: ☑️ agreed by Defined2014.

[AilinKid]

/approve

[bb7133]

LGTM

[easonn7]

/approve

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: AilinKid, bb7133, Defined2014, easonn7, tangenta

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Needs approval from an approver in each of these files:

• OWNERS [AilinKid,Defined2014,bb7133,tangenta]
• pkg/parser/OWNERS [bb7133,easonn7,tangenta]

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[Defined2014]

/retest

[Defined2014]

/retest